Bit for carving-machines.



N5. 74o,5@&. PATENTED 001". s, 1903.

' v. WINQEHST.

BIT FOR mavnw MACHINES.

APPLICATION IILEE F3122, 1902 H0 MODEL.

UNITED STATES Patented October 6, 1903 PATENT OF ICE.

tuoron WINQUIST, or nookronp, ILLINOIS, ASSIGNOR or ONE-HALF TO GLAUS c. rn'rnnson, or nooKFoRn LrNoIs.

BiT FORCA'RVING-MACHlNES.

FECIFIGATION forming part of Letters Patent No. 740,506, dated October 6, 1903.

Application filed Nciiember 22, 1902. Serial No. 132,491. on model.)

To all whom it may concern.-

Be it known that LVIoToa WINQUIST,a.Citl

The further object of this invention istov provide a holder for the bits.

In the accompanying drawings, Figure lis an elevationof a double cutting-bit. Fig. 2

is a lengthwise section on dotted line (i, Fig.

5. Fig. 3 is a lengthwise section on dotted line c, Fig. 5. Fig. 4: is atranverse section on dotted line a, Fig. 1. Fig. 5 is an end view of the cutter shown at Fig. l as seen looking at the shank. Fig. 6 is an elevation of a sin gle cutter. Fig. 7 is a lengthwise section on dotted line f, Fig. 10. Fig. 8 is a lengthwise section on dotted line g, FigLlO. Fig. 9 is a transverse section on dotted line b, Fig. 6. Fig. 10 is an end view of the cutter shown at Fig. 6 as seen looking at the shank. Fig. 11 is an elevation of an ogee cutter. a lengthwise section on dotted line h, Fig, 15. Fig. 13 is a lengthwise section on dotted line m, Fig. 15. Fig. l i'is a lengthwise section on dotted line c, Fig. 11. Fig. 15 is an end view of the cutter shown at Fig. 11 as seen looking at the shank. Fig. 16 is an end view of one of the cutting-bits. Fig. 17 is a per-v spective view of one of the cutting-bits. Fig.

' 18 is a transverse section on dotted line 21,

Fig. 17.

My invention relates to an improvement in the construction of bit cutters and sockets therefor, wherein the socket-spindle is provided with an inverted cone-shaped head, in which recesses disposed. longitudinally of the spindle leave an inverted wedge-shaped center. Cutters having wed ge-shanks are seated in said recesses and securely held in place by a retaining-sleeve, which surrounds said conical head and is held in position by a nut which ongages threads upon the socket-spindle.

Fig. 12a- The shank for holding the cutter-hits comprises a cylindrical portion 1,a screw-threaded portion 2, and a cone-shaped end 3. The coneshaped end of the shank for holding the double cutting-bits has two of its sides cut away to form lower shoulders, upon which the shanks of the cutting-tools rest, and leaving a wedge-shaped center 4. A collar 5 has its inner surface fitted to the cone-shaped upper end of the shank and a nut 6 engaging the screw-threaded section.

The cutting-hits are the duplicate of each other, each comprising a holdingrsection 7,

fitted to fill the cut-away portion of oneside of .the cone-shaped upper end of the shank,

and a cutting edge 8, having a partial twist with relation to the holding-section, as shown at Figs. 16, 17, and 18. y

The cutting-bits are placed in position in connection with the upper end of the shank portion and the collar slipped over them and the not turned up against the collar, thereby clamping the hits fir-mlyin position.

The connection for holding a single bit has but one side of the upper cone-shaped end of the shank cut away to receive a single bit.

By making the single and double hits with the cutting portion twisteda clearance is had,

as shown at Figs. 16 and 18.

- I claim as my invention 1. The combination of a bit-socket com= prising a shank having an inverted cone- -shaped head, 0ppositely=disposed recesses in said head, leavinganinverted-wedge-shaped portion forming-the end thereof, a flaring sleeve surrounding said head and means to hold said sleeve in place, with cutting-tools having their shanks, corresponding in shape to the cut-away portions of the head, which enter said recesses and are retained therein by said sleeve.

2. The combination of abit-socket and shank having an inverted cone-shaped head,

oppositely-disposed recesses in said head having their bases substantially at right angles to the axis of said shank and sloping sides which leave between them an inverted wedgeshaped portion forming the end of said head,

a flaring annular sleeve surrounding said head, means to hold said sleeve in place, and cutting-tools having wedge-shaped shanks which enter said recesses and rest upon the bases thereof while the body of the shank fills out and corresponds with the rounded contour of the head and is engaged by said invertedwedge-shaped portion forming the end of the head, a flaring annular sleeve surrounding said head, and means for hold- I 5 ing the sleeve in place, with a cutting-tool havingits shank corresponding in shape with and inserted into the recessed portion of the head, substantially as described.

VICTOR WINQUIST.

Witnesses:

A. O. BEHEL, E. BEHEL. 

